Adam Wieckowski

For now vvenc does not support either lossless compression nor other chroma subsampling than 420. The support is not planned in the near future.

Eventually, yes. There is also the block importance mapping alg. from VTM, which reuses the results of temporal filtering, so its less heavy. Otherwise it tries to get gain based...

Thanks for the PR. There are some issues with the build. Could you have a look? Also, could you explain 1 or 2 use cases and how to call them?...

We had a look and there are still a few issues. Let me start the discussion. I had a look more into the low-level functionalities and @jbrdbg was looking more...

Interesting. Are both bitstreams decodable? You are encoding with the DPH SEI enabled. Is it correctly reconstructed by the decoder? It would be interesting to know where the difference comes...

Thanks for checking for conformance. Without SIMD the results seems to be the same, but there is actually some floating point SIMD in the encoder. So even so, the difference...

AVX2 brings max 10% over SSE42, so I wouldnt get my hopes up for AVX512. If you find a way to automate PGO as a part of our CMake build...

Hmm... from the log files I understand that to do a profile based build, you need profiling info for every object? This will not be possible with vvenc for following...

Oh, wait, I just had a second look, and found the following: ``` [ 29%] Building CXX object source/Lib/vvenc/CMakeFiles/vvenc.dir/__/CommonLib/UnitPartitioner.cpp.o error: no profile data available for file "StatCounter.cpp" [-Werror,-Wprofile-instr-unprofiled] 1 error...

Proszę. You might try with an older clang version. We had some some issues with bleeding edge compilers a few times already.